Fact Sheet for Deposit Area 1524

					Norsk versjon
	THE INDUSTRIAL MINERAL DATABASE
	Deposit Area 1524 - 304
	(Last updated 04.feb.2004)

Name of Deposit Area : Kallskardet

(Object Id : 1524,304,00,00)

Location

County :

Møre og Romsdal (15)

Municipality :

Norddal (1524)

Map 1:50000:

Tafjord (1319-3)

Map 1:250000:

Ålesund

Marking point:

Longitude:

7.3836860

Latitude:

62.2175870

EU89-UTM Zone 32

(Coordinates IS confirmed)

X-coord:

415952 m.

Y-coord:

6899468 m.

Commodity

Main Type:

Olivine

Sub Type:

Olivine

Production

Activity:	Exploration	Reserves:
Prod. method:		Production:
Prod. status:		Volume of dump:

Importance

Public: Little Importance (reg. 18.02.2015)

Economical: Minor interest , (Confirmed 05.mar.2001 by Havard Gautneb)

Mineralization

Era: Period:

Dating: Method:

Genesis: Form:

Main texture: Min. distribution:

Main grain size:

Strike/Dip: Direction:

Plunge:

Stratigraphic classification of host rock

Era: Period:

Province:

Geotec.unit:

Tectonic complex:

Igneous complex:

Group: Formation:

Mineralogy

Relationship Mineral Amount

Not defined Olivine Major mineral (>90%)

Information(s) in free text format

Free text

Forekomsten ligger oppe i Kallskardet, rett ovenfor Tafjord sentrum. Her opptrer en dunittisk bergart sammen med eklogitt. Denne lokaliteten er fredet p.g.a sin mineralogi.

Bibliography:

From NGU's Reference Archive:

Brueckner, H.K. , 1977

A structural, stratigraphic and petrologic study of anorthosites, eclogites and ultramafic rocks and their country rocks, Tafjord area, western South Norway.

;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.332;1-53 + pl pages

Abstract:

The Tafjord area of the central basal gneiss region contains Caledonized metamorphic rocks divided into two groups. The 1000 m.y. old Fetvatn Geniss is a homogeneous zone of granodioritic gneiss that was intruded as part of a large plutonic complex during the Sveconorwegian Cycle. The heterogeneous Vikvatn Sequence contains obvious metasedimentary and metavolcanic rocks and is comprised of the Øyen, Øvste Rødal and Svartegga groups. In addition, anothosite, eclogite and anhydrous peridotite occur within the Øyen and Øvste Rødal groups. The quartizite-rich Svartegga group may form the basal (Eocambrian) part of the Caledonian supracrustal sequence typical of the eastern basal gneiss region. The Øyen and Øvste Rødal groups would then be Precambrian metasedimentary sequences seperated from the Svartegga group by a major unconformity. Structures include two early generations (F1A og F1B) of east-plunging, reclined, isoclinal, similar folds. Later (F2) folds generally have a concentric geometry, disharmonic profiles and variable axes. The F1 and F2 fabrics are identical to stuctures in the eastern basal geniss region that are believed to have formed during the Caledonian orogeny; but the F1A fabric may be a heterogeneous assemblage of Precambrian structures that were homogenized (Caledonized) during the intense F1B deformation.

	Era:		Period:
	Dating:		Method:
	Genesis:		Form:
	Main texture:		Min. distribution:

	Province:
	Geotec.unit:
	Tectonic complex:
	Igneous complex:

	Relationship	Mineral	Amount
	Not defined	Olivine	Major mineral (>90%)